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masha68 [24]
3 years ago
7

Yeah, it's really late at night and I can't think...hah..help

Mathematics
2 answers:
k0ka [10]3 years ago
4 0
A. $48.75

b. $51.8

c. Mary's backpack was a better deal
krok68 [10]3 years ago
3 0

Answer:ME WANT POINTS LOL SRY

Step-by-step explanation:

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I need help on 13, i have the answer but am not sure how to solve please help
Georgia [21]

Answer:

x³-9x²+14x+24

Step-by-step explanation:

here given : 4, -1, 6

so put negative value of each digit in the equation

(x-4)(x+1)(x-6)

(x²-4x+x-4)(x-6)

(x²-3x-4)(x-6)

(x³-3x²-4x-6x²+18x+24)

x³-9x²+14x+24

7 0
2 years ago
Read 2 more answers
Simplify the expression (-3x)^4
Sati [7]
(-3x)⁴

Basically, just do this :

(-3x) × (-3x) × (-3x) × (-3x)

So now you have 9x² × 9x²

9 × 9 = 81

x² × x² = x⁴

So, your answer is 81x⁴

~Hope I helped!~
8 0
3 years ago
Find the distance between ( -2, 5) (-2, 14).
WITCHER [35]

Answer:

9

Step-by-step explanation:

x didn't change in value, y changed by 9

the distance between the two points is 9

6 0
2 years ago
Find the volume of the prism
leva [86]

Using the formula given for area:

Area = 1/2 (7 +5)4 = 1/2(12)4 = 24 square cm.

Now to find the volume multiply the area by the depth:

24 x 6 = 144 cubic cm.

8 0
3 years ago
A game shop sells marbles in clear plastic cylinders. Four marbles fit across the diameter of the cylinder and 10 marbles fit fr
slega [8]
To start, you know that this question is asking for the surface area of one of the cylinders, and the formula to finding the surface area of a cylinder is A=2πrh+2<span>πr^2.

Now, to find the surface area, you first need to figure out the height of the plastic cylinder and its radius. 
Since you know that the diameter (twice the radius) of the cylinder is equivalent to 4 marbles, and each marble has a diameter of 2 cm, the diameter of the cylinder would be 8 cm. Then, to find its radius, you divide by 2, so its radius is 4.
Now, since you know that the height of the cylinder is 10 marbles, you multiply 10 by 2 to get that the height is 20 cm tall. 
Since you now have the values of the height and the radius, plug the values into the surface area of a cylinder formula (r is radius and h is height).
</span>A=2π(4)(20)+2π(4)^2.
<span>Assuming that pi is 3.14, when you simplify this using PEMDAS, you get 
502.4+100.48 which then simplifies to 602.88, the area of the plastic to make one cylinder.



</span>
5 0
3 years ago
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